Weird background color when scanning to pdf

[BillBarr]

Hi. I have messed something up. I have Adobe Acrobat Pro XI with regular updates. When I create a pdf from scanner in any format other than black and white, I get this grayish blue haze behind the content. I am sure it is not my scanner itself, because scanning directly to Photoshop works just fine. Besides, I also get it when I try to convert some (not all) Word documents to pdfs. So, I have clearly screwed up something in my Acrobat settings, but I don't know what. The weird color shows up both in a digital pdf and when I try to print the pdf. 

Suggestions? Thanks for your help.

Carole

[Levinb]

I have a very similiar issue, all scanned documents have a bluish background tint. INstead of being black and white they are blue and white. Scanner works perfectly in all other programs. 

[Amal.]

Hi there,

Hope you are doing well and thanks for reaching out.

Is this an issue with a particular PDF file or with all the PDFs? Please try with a different PDF file and check.

Also go to Preferences (Ctrl,Cmd+K) > Accessibility > Set Page background to 'White' and Document text to 'Black' > click OK and reboot the application and check.

Let us know if you experience any trouble and need more help.

~Amal